The symbol for the confidence coefficient of a statistical test is
A: α.
B: 1 - α.
C: β.
D: 1 - β.
A: α.
B: 1 - α.
C: β.
D: 1 - β.
举一反三
- What is not the basic statistical research method in the following method is ( ) A: Test method B: Statistical index method C: Mass Observation Method D: Statistical grouping
- There are 4 messages A,B,C and D, with probability 1/4, 1/8, 1/8 and 1/2 respectively. The occurrence of each message is independent of each other. Calculate the average information of each message A: 1.5 bit/symbol B: 2.5 bit/symbol C: 2 bit/symbol D: 1.75 bit/symbol
- 下列Python代码，函数的定义和调用书写正确的是（） A: def test(a| b): print(a) print(b) test(1| 2) B: def test(a): print(a) print(b) test(1, 2) C: def test(a, b): print(a) print(b) test(1) D: def test(a, b): print(a) print(b) test(1, 2)
- The Pearson coefficient of correlation r equals 1 when there is/are no:
- 下述选项中，______可以实现每隔1秒钟调用一次test()函数的功能。 A: setTimeout("test()", 1) B: setTimeout("test()", 1000) C: setInterval("test()", 1) D: setInterval("test()", 1000)